I'm going to be using some Mac Minis for running some parts of our shows. Since our animations are pretty busy, and the minis use a pretty low end video chip that uses system memory, I need to make sure there is plenty of memory on the machine, so I bought a Mini at the Apple store and then bought 3 GB of PC2 5300 667 memory and was met with the challenge of sticking said memory into said computer.
When Apple wants to make it easy to change memory, they do a beautiful job of designing their computers so you can put more memory in without using any tools. The Mac Mini is not one of those computers, though, and taking it apart is quite a challenge. Fortunately, there are a couple of good walkthroughs on the web of doing just that. The one at MethodShop is the most specific while the one at AppleFritter.com has plenty of nice pictures which help a lot when you're trying to figure out where that doo dad came from.
While they both cover the fact that you need to pop out the airport antenna to get at one of the screws, neither of them mention that if you aren't careful, the cable that connects that antenna to the motherboard will also pop off and there are no diagrams that show where it might have come from. Fortunately, I did find a picture that kinda sort hints at where it might go and I was able to re-attach it. A few minutes later and BING, I've got a 3 GB, 1.83GHz Mac Mini up and running.